Flavor generation article

Abstract

Provided is a flavor generating article comprising a susceptor-containing sheet which is flat and contains a susceptor material and a first sheet and a second sheet each of which has a wave shape and which are arranged on both sides of the susceptor-containing sheet. At least one of the susceptor-containing sheet, the first sheet, and the second sheet contains tobacco.

Description

Flavor-generating products

[0001] The present invention relates to a flavor generating article.

[0002] Flavor inhalers for inhaling flavors and the like without burning the material are known. For example, smoking material heating devices are known as such flavor inhalers, which heat smoking material made of tobacco containing volatile components to form an aerosol. A known example of such smoking material is a consumable product that includes a slab of tobacco, a spacer, and a filter (see Patent Document 1).

[0003] International Publication No. 2019 / 162497

[0004] An object of the present invention is to provide a cartridge and a flavor inhaler having a new structure.

[0005] According to a first aspect, there is provided a flavor generating article comprising a flat susceptor-containing sheet comprising a susceptor material and corrugated first and second sheets disposed on opposite sides of the susceptor-containing sheet, wherein at least one of the susceptor-containing sheet, the first sheet, and the second sheet comprises tobacco.

[0006] According to the first aspect, a gap can be formed between the susceptor-containing sheet and the first and second sheets, through which the flavor or aerosol generated from the tobacco passes. This allows the flavor or aerosol generated from the tobacco to be efficiently delivered downstream. Furthermore, because the susceptor-containing sheet contains a susceptor material, the tobacco can be heated without contacting a heat source with the flavor-generating article. Therefore, the gap is not crushed by contact of a heater or the like with the flavor-generating article, allowing for stable delivery of the flavor or aerosol. Furthermore, because the susceptor-containing sheet containing the susceptor material is disposed so as to be sandwiched between the first and second sheets, the gap through which the flavor or aerosol passes can prevent heat generated by the susceptor material from being transferred to the surface of the flavor-generating article. As a result, a complex heat insulation mechanism is not required for the flavor inhaler.

[0007] A second aspect is the first aspect, wherein the cigarette includes an aerosol source.

[0008] According to the second aspect, the amount of aerosol delivered to the user can be increased.

[0009] A third aspect is characterized in that, in the first or second aspect, the first sheet has a first surface facing the susceptor-containing sheet and a second surface opposite the first surface, and a liner sheet is provided on the second surface.

[0010] According to the third aspect, the first sheet is covered by the liner sheet, allowing the user to handle the flavor-generating article without directly touching the first sheet. This prevents the first sheet from being crushed, maintaining a gap between the susceptor-containing sheet and the first sheet, enabling stable delivery of the flavor or aerosol. Furthermore, the liner sheet can prevent heat from the susceptor-containing sheet from being transferred to the user's hands when the flavor-generating article is removed from the flavor inhaler after use.

[0011] A fourth aspect is the third aspect, wherein the liner sheet is paper.

[0012] According to the fourth aspect, a lightweight and inexpensive flavor-generating article can be provided.

[0013] A fifth aspect is the third or fourth aspect, wherein a part or all of the gap between the first sheet and the liner sheet is closed.

[0014] According to the fifth aspect, air is prevented from passing through the gap between the first sheet and the liner sheet, which allows the air passing through the flavor-generating product to easily flow through the gaps between the susceptor-containing sheet and the first and second sheets, thereby enabling the flavor or aerosol generated from the tobacco to be efficiently delivered downstream.

[0015] A sixth aspect is summarized as any one of the first to fifth aspects, wherein at least one of the first sheet and the second sheet includes paper or pulp mold.

[0016] According to the sixth aspect, a lightweight, inexpensive, and sturdy flavor generating article can be provided.

[0017] A seventh aspect is summarized as any one of the first to sixth aspects, wherein the height of the wave portion of at least one of the first sheet and the second sheet is 0.2 mm or more and 2.0 mm or less.

[0018] If the height of the corrugated portion is less than 0.2 mm, the gap between the susceptor-containing sheet and at least one of the first and second sheets becomes too small, which may result in inefficient delivery of the flavor or aerosol generated from the tobacco downstream. In addition, in this case, the insulation provided by the gap between the susceptor-containing sheet and at least one of the first and second sheets may be reduced. If the height of the corrugated portion exceeds 2.0 mm, the size of the flavor-generating product becomes too large. Therefore, according to the seventh aspect, the flavor or aerosol can be delivered efficiently and the size of the flavor-generating product can be reduced.

[0019] An eighth aspect is summarized as any one of the first to seventh aspects, wherein the height of the wave portion of the first sheet and the height of the wave portion of the second sheet are different.

[0020] According to the eighth aspect, the size of the gap between the susceptor-containing sheet and the first sheet can be made different from the size of the gap between the susceptor-containing sheet and the second sheet. Therefore, for example, when tobacco is formed by laminating a first tobacco sheet and a second tobacco sheet containing different flavors, the first flavor from the first tobacco sheet can be passed through the first gap, and the second flavor from the second tobacco sheet can be passed through the second gap, thereby adjusting the delivery amount of each flavor and providing the user with the desired flavor.

[0021] A ninth aspect is summarized as any one of the first to eighth aspects, wherein the width of the wave portion of at least one of the first sheet and the second sheet is 0.2 mm or more and 2.0 mm or less.

[0022] If the width of the wavy portion is less than 0.2 mm, there is a risk of an undesired increase in resistance to inhalation when an aerosol is passed through the wavy portions and inhaled. If the width exceeds 2.0 mm, there is a risk of the strength of the flavor-generating article being weakened. Therefore, according to the ninth aspect, the strength of the flavor-generating article can be maintained while suppressing an undesired increase in resistance to inhalation.

[0023] A tenth aspect is summarized as any one of the first to ninth aspects, wherein at least one of the first sheet and the second sheet contains a fragrance.

[0024] According to the tenth aspect, a flavoring agent can be provided to the user in addition to the flavor or aerosol.

[0025] An eleventh aspect is summarized as any one of the first to tenth aspects, wherein the susceptor-containing sheet extends only partially in the longitudinal or width direction of the flavor-generating article.

[0026] According to the eleventh aspect, the susceptor-containing sheet has a length or width that is shorter than the overall length or width of the flavor-generating article. Therefore, the flavor-generating article does not need to be provided with a susceptor-containing sheet having a size similar to the overall size of the flavor-generating article, so that only the amount of susceptor-containing sheet required for the flavor-generating article can be provided, thereby reducing the amount of susceptor material.

[0027] A twelfth aspect is summarized as any one of the first to eleventh aspects, in that the susceptor-containing sheet includes a sheet of the susceptor material and a tobacco sheet laminated on the sheet of the susceptor material.

[0028] According to the twelfth aspect, the tobacco sheet can be heated by inductively heating the sheet-shaped susceptor material.

[0029] A thirteenth aspect is the twelfth aspect, wherein the sheet-shaped susceptor material has an area smaller than that of the tobacco sheet.

[0030] According to the thirteenth aspect, it is possible to save on susceptor material.

[0031] A fourteenth aspect is the twelfth or thirteenth aspect, wherein the tobacco sheet includes a first tobacco sheet and a second tobacco sheet, and the sheet-shaped susceptor material is sandwiched between the first tobacco sheet and the second tobacco sheet.

[0032] According to the fourteenth aspect, the sheet-shaped susceptor material is induction heated, thereby making it possible to heat the first tobacco sheet and the second tobacco sheet more uniformly.

[0033] A fifteenth aspect is summarized as the fourteenth aspect, wherein the first tobacco sheet and the second tobacco sheet are different from each other in at least one of flavor, thickness, aerosol source content, and surface shape.

[0034] According to the fifteenth aspect, when the flavors are different, different flavors can be generated from the first tobacco sheet and the second tobacco sheet. Therefore, by adjusting the delivery amount of each flavor, the desired flavor can be provided to the user. Furthermore, when the thicknesses are different, a relatively thin tobacco sheet will experience a rapid temperature rise, allowing for efficient delivery of the initial flavor or aerosol. In contrast, a relatively thick tobacco sheet will experience a gradual temperature rise, allowing flavor or aerosol generation to continue until the latter half of smoking. When the aerosol source contents are different, a tobacco sheet with a relatively low aerosol source content will experience a rapid temperature rise, allowing for efficient delivery of the initial flavor or aerosol. In contrast, a tobacco sheet with a relatively high aerosol source content will experience a gradual temperature rise, allowing flavor or aerosol generation to continue until the latter half of smoking. Furthermore, when the surface shapes of the tobacco sheets are different, a tobacco sheet with a relatively large surface area will allow efficient delivery of the initial flavor or aerosol. In contrast, with a tobacco sheet having a relatively small surface area, the temperature rise is gradual, and flavor or aerosol generation can continue until the latter half of smoking.

[0035] A sixteenth aspect is summarized as any one of the first to eleventh aspects, in that the susceptor-containing sheet includes a tobacco sheet and the susceptor material in a granular form.

[0036] According to the sixteenth aspect, the granular susceptor material is induction heated, thereby heating the tobacco sheet.

[0037] A seventeenth aspect is summarized as any one of the twelfth to sixteenth aspects, wherein the tobacco sheet has a thickness of 0.25 mm or more and 4.0 mm or less.

[0038] If the thickness of the tobacco sheet is less than 0.25 mm, the amount of flavor or aerosol generated per unit area of ​​the sheet may be small. If the thickness of the tobacco sheet is more than 4.0 mm, the size of the flavor-generating article may become too large. In this case, it takes a long time to heat the tobacco sheet, which may result in a long time until the initial puff or an insufficient amount of delivery in the initial puff. Therefore, according to the seventeenth aspect, it is possible to generate sufficient flavor or aerosol while suppressing the size of the flavor-generating article.

[0039] The eighteenth aspect is summarized as follows: in any of the first to eleventh aspects, the susceptor-containing sheet consists of only the susceptor material, or includes the sheet-like susceptor material and a non-tobacco sheet laminated on the sheet-like susceptor material.

[0040] According to the eighteenth aspect, the susceptor-containing sheet does not contain tobacco, and therefore at least one of the first sheet and the second sheet contains tobacco. As a result, when the susceptor-containing sheet is induction-heated, the tobacco contained in at least one of the first sheet and the second sheet is heated, and a flavor or aerosol can be generated.

[0041] A nineteenth aspect is summarized as any one of the first to eighteenth aspects, wherein at least one of the first sheet and the second sheet contains the tobacco.

[0042] According to the nineteenth aspect, the susceptor-containing sheet is induction-heated, whereby tobacco contained in at least one of the first sheet and the second sheet is heated, and flavor or aerosol can be generated.

[0043] A twentieth aspect is summarized as any one of the first to nineteenth aspects, wherein at least one of the first sheet and the second sheet is a non-tobacco sheet.

[0044] According to the twentieth aspect, at least one of the first sheet and the second sheet is formed of any material other than tobacco, so that a lightweight, inexpensive, and sturdy flavor generating article can be provided.

[0045] 1 is a schematic side view of a flavor inhaler that heats a flavor generating article according to the present embodiment; FIG. 2 is a schematic view of an example of a flavor inhaler; FIG. 3 is a perspective view of a flavor generating article; FIG. 4 is a cross-sectional view of the flavor generating article shown in FIG. 3 as seen from the longitudinal direction; FIG. 5 is a cross-sectional view of a flavor generating article according to another embodiment as seen from the longitudinal direction; FIG. 6 is a cross-sectional view showing the configuration of a susceptor-containing sheet of a flavor generating article according to the present embodiment; FIG. 7 is a cross-sectional view showing the configuration of a susceptor-containing sheet of a flavor generating article according to another embodiment; FIG. 8 is a cross-sectional view showing the configuration of a susceptor-containing sheet of a flavor generating article according to yet another embodiment.

[0046] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings described below, identical or corresponding components are designated by the same reference numerals, and redundant description will be omitted. In this specification, the term "longitudinal direction" refers to the direction in which air passes through the flavor-generating product. Alternatively, the term "longitudinal direction" refers to the extending direction of the concave or convex portions of the first sheet or second sheet described below. In addition, in this specification, the term "short direction" or "width direction" refers to the direction perpendicular to the longitudinal direction.

[0047] 1 is a schematic side view of a flavor inhaler for heating a flavor-generating article according to the present embodiment. The flavor inhaler 100 according to the present embodiment is configured to generate a flavor or an aerosol by heating a flavor source or an aerosol source included in the flavor-generating article. As shown in the figure, the flavor inhaler 100 has a first housing 110, a second housing 120, and a mouthpiece 130. The first housing 110 and the second housing 120 may be configured to be detachable from each other. The mouthpiece 130 may be detachably connected to one end of the second housing 120 or may be formed integrally with the second housing 120.

[0048] 2 is a schematic diagram of an example of a flavor inhaler 100. As shown in the figure, the flavor inhaler 100 has a battery 140, a heating unit 150, and a control circuit 170 arranged inside a first housing 110, and a cooling unit 160 arranged inside a second housing 120. The first housing 110 and the second housing 120 are rotatably connected to each other, for example, by a hinge. The first housing 110 and the second housing 120 may also be connected to each other so as to be completely separable, for example, by snap fitting or screwing. By completely separating the first housing 110 and the second housing 120 from each other in this manner, the cooling unit 160, the mouthpiece 130, and the heating unit 150 can be easily cleaned.

[0049] The battery 140 is configured to supply power to the heating unit 150, the control circuit 170, etc. For example, the battery 140 is a lithium-ion battery. The battery 140 may be rechargeable by an external power source. The cooling unit 160 is configured to cool the aerosol generated from the flavor-generating article 10. The cooling unit 160 may be, for example, a space in which the aerosol passing through it is naturally cooled. Alternatively, the cooling unit 160 may be arranged or filled with one or more materials selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, and aluminum foil. By arranging or filling the cooling unit 160 with these materials, the aerosol can be cooled more efficiently.

[0050] In the illustrated example, the heating unit 150 has an induction coil 150b for inductively heating a susceptor included in the flavor-generating article 10. The flavor inhaler 100 shown in Fig. 2 may have an electromagnetic shield (not shown) between the heating unit 150 and the control circuit 170, which prevents electromagnetic waves generated by the induction coil 150b from reaching the control circuit 170. The heating unit 150 is configured to heat the flavor-generating article 10 to, for example, 200°C or higher and 350°C or lower.

[0051] The control circuit 170 is configured with a CPU, a memory, etc., and controls the operation of the flavor inhaler 100. For example, the control circuit 170 starts heating the flavor-generating article 10 in response to a user's operation on an input device such as a push button or a slide switch (not shown), and stops heating the flavor-generating article 10 after a certain time has elapsed. The control circuit 170 may stop heating the flavor-generating article 10 even before the certain time has elapsed since the start of heating the flavor-generating article 10 if the number of puffing actions by the user exceeds a certain value. For example, the puffing action is detected by a sensor (not shown).

[0052] Alternatively, the control circuit 170 may start heating the flavor-generating article 10 in response to the start of a puffing action, and may stop heating the flavor-generating article 10 in response to the end of the puffing action. The control circuit 170 may stop heating the flavor-generating article 10 when a certain time has elapsed since the start of the puffing action, even before the end of the puffing action. In the illustrated example, the control circuit 170 is disposed between the battery 140 and the heating unit 150, and suppresses heat transfer from the heating unit 150 to the battery 140.

[0053] The flavor-generating article 10 generates vapor and aerosol of the aerosol source or flavor source by being heated by the heating section 150. The vapor and aerosol generated in the flavor-generating article 10 are cooled by passing through the cooling section 160 and reach the user's mouth through the mouthpiece 130. In this embodiment, the flavor-generating article 10 is in the form of a sheet, a plate, or a card.

[0054] Next, the flavor-generating article 10 will be described in detail. FIG. 3 is a perspective view of the flavor-generating article 10. FIG. 4 is a cross-sectional view of the flavor-generating article 10 shown in FIG. 3, viewed from the longitudinal direction d1. As shown in FIG. 3, the flavor-generating article 10 can be formed in the shape of a flat sheet as a whole. As shown in FIGS. 3 and 4, the flavor-generating article 10 has a flat susceptor-containing sheet 20 containing a susceptor material, and corrugated first and second sheets 42 and 44 arranged on either side of the susceptor-containing sheet 20. Specifically, the susceptor-containing sheet 20 is a generally flat sheet as a whole. At least one of the susceptor-containing sheet 20, the first sheet 42, and the second sheet 44 contains tobacco and generates a flavor or aerosol upon heating. In this embodiment, the first and second sheets 42 and 44 have sinusoidal cross sections. However, the present invention is not limited to this, and at least one of the first sheet 42 and the second sheet 44 may have a wave-shaped cross section of any shape, such as a rectangular wave, a triangular wave, or a sawtooth wave.

[0055] Specific examples of tobacco include shredded dried tobacco leaves, ground leaf tobacco, and tobacco extracts (extracts made from water, organic solvents, or a mixture thereof). Ground leaf tobacco is particles obtained by grinding leaf tobacco. The ground leaf tobacco can have an average particle size of, for example, 30 to 120 μm. Grinding can be performed using a known grinder, and can be either dry or wet grinding. Therefore, ground leaf tobacco is also referred to as leaf tobacco particles. In this embodiment, the average particle size is determined by a laser diffraction / scattering method, specifically, using a laser diffraction particle size distribution analyzer (e.g., Horiba, Ltd. LA-950). Furthermore, the type of tobacco is not limited, and flue-cured, Burley, Orient, native, and other Nicotiana tabacum and Nicotiana rustica varieties can be used. The amount of tobacco contained in the first susceptor-containing sheet 20, the first sheet 42, or the second sheet 44 is not particularly limited, but is preferably 1 to 30% by weight, more preferably 10 to 20% by weight.

[0056] When at least one of the first sheet 42 and the second sheet 44 contains tobacco, the tobacco may be supported on a sheet made of non-tobacco fibers, such as pulp fibers or nonwoven fabric. Alternatively, at least one of the first sheet 42 and the second sheet 44 may be formed from a tobacco sheet. Examples of the tobacco sheet that can be used include a tobacco leaf paper sheet, a tobacco leaf cast sheet, and a tobacco leaf rolled sheet. The tobacco sheet may further contain an aerosol source. The type of aerosol source is not particularly limited, and extracts and / or their components from various natural products can be selected depending on the application. The aerosol source is preferably a polyhydric alcohol, such as glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

[0057] According to the flavor-generating article 10 shown in FIGS. 3 and 4 , gaps S1 and S2 through which flavor or aerosol generated from tobacco passes can be formed between the susceptor-containing sheet 20 and the first sheet 42 and the second sheet 44, respectively. This allows the flavor or aerosol generated from tobacco to be efficiently delivered downstream. Furthermore, because the susceptor-containing sheet 20 contains a susceptor material, tobacco can be heated without contacting a heat source with the flavor-generating article 10. Therefore, the gaps S1 and S2 are not crushed by contact with a heater or the like with the flavor-generating article 10, allowing stable delivery of the flavor or aerosol. Furthermore, because the susceptor-containing sheet 20 containing the susceptor material is sandwiched between the first sheet 42 and the second sheet 44, the gaps through which the flavor or aerosol passes can prevent heat generated by the susceptor material from being transferred to the surface of the flavor-generating article 10. As a result, a complex heat insulation mechanism is not required for the flavor inhaler 100. The cigarette may include an aerosol source, or at least one of the susceptor-containing sheet 20, the first sheet 42, and the second sheet 44 may include an aerosol source, thereby increasing the amount of aerosol delivered to the user.

[0058] As shown in FIG. 4 , the first sheet 42 has a first surface 42a facing the susceptor-containing sheet 20 and a second surface 42b opposite the first surface 42a. In this embodiment, a first liner sheet 51 is preferably provided on the second surface 42b. In this case, the first sheet 42 is covered by the first liner sheet 51, allowing the user to handle the flavor-generating article 10 without directly touching the first sheet 42. This prevents the first sheet 42 from being crushed, thereby maintaining the gap S1 between the susceptor-containing sheet 20 and the first sheet 42, allowing for stable delivery of flavor or aerosol. Furthermore, the first liner sheet 51 can prevent heat from the susceptor-containing sheet 20 from being transferred to the user's hands when the flavor-generating article 10 is removed from the flavor inhaler 100 after use.

[0059] Similarly, the second sheet 44 has a first surface 44a facing the susceptor-containing sheet 20 and a second surface 44b opposite the first surface 44a. In this embodiment, a second liner sheet 52 is preferably provided on the second surface 44b. In this case, the second sheet 44 is covered by the second liner sheet 52, allowing the user to handle the flavor-generating article 10 without directly touching the second sheet 44. This prevents the second sheet 44 from being crushed, thereby maintaining the gap S2 between the susceptor-containing sheet 20 and the second sheet 44 and ensuring stable delivery of flavor or aerosol. Furthermore, the second liner sheet 52 can prevent heat from the susceptor-containing sheet 20 from being transferred to the user's hands when the flavor-generating article 10 is removed from the flavor inhaler 100 after use.

[0060] At least one of the first liner sheet 51 and the second liner sheet 52 is preferably made of paper. In this case, a lightweight and inexpensive flavor-generating article 10 can be provided. As shown in FIG. 4 , a gap S3 is formed between the first sheet 42 and the first liner sheet 51. Part or all of this gap S3 is preferably closed. In this case, air is prevented from passing through the gap S3 between the first sheet 42 and the first liner sheet 51. This allows air passing through the flavor-generating article 10 to easily flow through the gaps S1 and S2 between the susceptor-containing sheet 20 and the first sheet 42 and the second sheet 44, thereby enabling the flavor or aerosol generated from the susceptor-containing sheet 20 to be efficiently delivered downstream. Similarly, a gap S4 is formed between the second sheet 44 and the second liner sheet 52. Part or all of this gap S4 is preferably closed. In this case, air is prevented from passing through the gap S4 between the second sheet 44 and the second liner sheet 52. This allows air passing through the flavor-generating article 10 to easily flow through the gaps S1, S2 between the susceptor-containing sheet 20 and the first sheet 42 and the second sheet 44, thereby enabling the flavor or aerosol generated from the susceptor-containing sheet 20 to be efficiently delivered downstream. As shown in Figure 4, at least one of the first liner sheet 51 and the second liner sheet 52 is preferably flat.

[0061] 3, the first sheet 42 and the second sheet 44 have a corrugated cross section with protrusions and depressions extending along the longitudinal direction d1. The first sheet 42 and the second sheet 44 can also be referred to as ridged sheets as a whole.

[0062] At least one of the first sheet 42 and the second sheet 44 may be a non-tobacco sheet formed of a material other than tobacco. In this case, specifically, for example, at least one of the first sheet 42 and the second sheet 44 preferably includes paper or molded pulp. This allows the flavor-generating article 10 to be formed to be lightweight, inexpensive, and sturdy. At least one of the first sheet 42 and the second sheet 44 may include tobacco. In this case, induction heating of the susceptor-containing sheet 20 heats the tobacco contained in at least one of the first sheet 42 and the second sheet 44, allowing flavor or aerosol to be generated.

[0063] 4, the first sheet 42 and the second sheet 44 have the same corrugated cross-sectional shape and are opposed to each other with a phase difference of 90° across the susceptor-containing sheet 20. In other words, the first sheet 42 has a convex portion 42c and a concave portion 42d, and the second sheet 44 has a convex portion 44c and a concave portion 44d, and the first sheet 42 and the second sheet 44 can be arranged such that the concave portion 42d and the convex portion 44c face each other across the susceptor-containing sheet 20.

[0064] Fig. 5 is a cross-sectional view of a flavor-generating article 10 according to another embodiment, as viewed from the longitudinal direction d1. As shown in Fig. 5, the first sheet 42 and the second sheet 44 may have the same corrugated cross-sectional shape and may face each other via the susceptor-containing sheet 20 so that their phases match. In other words, the first sheet 42 and the second sheet 44 may be arranged so that the recesses 42d of the first sheet 42 and the recesses 44d of the second sheet 44 face each other via the susceptor-containing sheet 20.

[0065] 4 and 5, the height and width of the waves in the cross section of the first sheet 42 are the same as those in the second sheet 44. However, the height or width of the waves in the cross section of the first sheet 42 may be different from the height or width of the waves in the cross section of the second sheet 44.

[0066] The height h1 of the corrugated portion of at least one of the first sheet 42 and the second sheet 44 is preferably 0.2 mm or more and 2.0 mm or less. If the height h1 (see FIG. 4 ) of the corrugated portion is less than 0.2 mm, the gaps S1 and S2 between the susceptor-containing sheet 20 and at least one of the first sheet 42 and the second sheet 44 become too small, which may result in an inefficient downstream delivery of the flavor or aerosol generated from the tobacco. Furthermore, in this case, the insulation provided by the gaps S1 and S2 between the susceptor-containing sheet 20 and at least one of the first sheet 42 and the second sheet 44 may be reduced. If the height h1 of the corrugated portion exceeds 2.0 mm, the size of the flavor-generating article 10 becomes too large. Therefore, if the height h1 of the corrugated portion is within the above-mentioned range, the flavor or aerosol can be efficiently delivered and the size of the flavor-generating article 10 can be reduced.

[0067] The width of the wave portion of at least one of the first sheet 42 and the second sheet 44 (i.e., the length between the crests of the waves) is preferably 0.2 mm or more and 2.0 mm or less. If this width is less than 0.2 mm, there is a risk of an undesired increase in inhalation resistance when an aerosol is passed through the waves and inhaled. If this width exceeds 2.0 mm, there is a risk of the strength of the flavor-generating article 10 being weakened. Therefore, if this width is within the above numerical range, the strength of the flavor-generating article 10 can be maintained while suppressing an undesired increase in inhalation resistance.

[0068] At least one of the first sheet 42 and the second sheet 44 may include a flavoring, in which case the flavoring may be provided to the user in addition to the flavor or aerosol. The type of the fragrance is not particularly limited, and from the viewpoint of imparting a good fragrance sensation, examples thereof include acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, Peru balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, β-carotene, carrot juice, L-carvone, β-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronella oil, DL-citronellol, ... Lonnelol, clary sage extract, cocoa, coffee, konjac oil, coriander oil, cuminaldehyde, davanna oil, delta-decalactone, gamma-decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1,2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3,(5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, gene absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, gamma-heptalactone, gamma-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexyl alcohol, phenylhexyl acetate, honey, 4-hydroxy-3-pentenoic acid, lauryl methylpropional Ingredients: methicone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, immortelle absolute, beta-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, labdanum oil, lemon terpeneless oil, licorice extract, linalool, linalyl acetate, robertia jasmine Orris root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, para-methoxybenzaldehyde, methyl 2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, honey, myristic acid, nerol, nerolidol, gamma-nonalactone, nutmeg oil, delta-octalactone, octanal, octanoic acid, orange flower oil, orange oil, orris root oil, palmitic acid, omega-pentadeca Calactone, peppermint oil, petitgrain Paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenylguaethol, propyl acetate, 3-propylidenephthalide, prune juice, pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, styrax absolute, marigold oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetramethyl-13-oxacyclo(8.3.0.0(4.9))tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecanone, triethyl citrate, 4-(2,6,6-trimethyl-1-cyclohexenyl)2-buten-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4-(2,6,6-trimethyl-1,3-cyclohexadienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, veratrol At least one of aldehydes, violet leaf absolute, N-ethyl-p-menthane-3-carboxamide (WS-3), ethyl-2-(p-menthane-3-carboxamide) acetate (WS-5), sugars (sucrose, fructose, etc.), cocoa powder, carob powder, coriander powder, licorice powder, orange peel powder, rose pip powder, chamomile flower powder, lemon verbena powder, peppermint powder, leaf powder, spearmint powder, black tea powder, natural plant flavors (e.g., jasmine oil, lemon oil, vetiver oil, lovage oil), and esters may be selected.

[0069] Furthermore, the susceptor-containing sheet 20 may extend only partially in the longitudinal direction d1 or width direction d2 of the flavor-generating article 10. In this case, the susceptor-containing sheet 20 has a length or width that is shorter than the overall length or width of the flavor-generating article 10. Therefore, the flavor-generating article 10 does not need to be provided with a susceptor-containing sheet 20 that has a size similar to the overall size of the flavor-generating article 10, and therefore only the necessary amount of susceptor-containing sheet 20 is provided for the flavor-generating article 10, thereby reducing the amount of susceptor material.

[0070] Fig. 6A is a cross-sectional view showing the configuration of the susceptor-containing sheet 20 of the flavor generating article 10 according to this embodiment. Fig. 6B is a cross-sectional view showing the configuration of the susceptor-containing sheet 20 of the flavor generating article 10 according to another embodiment. As shown in Fig. 6A, in this embodiment, the susceptor-containing sheet 20 may have a sheet-like susceptor material 25 and a tobacco sheet 21 laminated on the sheet-like susceptor material 25. In this case, the tobacco sheet 21 can be heated by induction heating the sheet-like susceptor material 25.

[0071] Specifically, in this embodiment, the tobacco sheet 21 of the susceptor-containing sheet 20 preferably includes a first tobacco sheet 21a and a second tobacco sheet 21b. In this case, as shown in Fig. 6A, it is preferable that the sheet-shaped susceptor material 25 is sandwiched between the first tobacco sheet 21a and the second tobacco sheet 21b. In this case, induction heating of the sheet-shaped susceptor material 25 allows the first tobacco sheet 21a and the second tobacco sheet 21b to be heated more uniformly. However, this is not limitative, and the second tobacco sheet 21b may be directly laminated on the first tobacco sheet 21a. Alternatively, the tobacco sheet 21 may include only either the first tobacco sheet 21a or the second tobacco sheet 21b.

[0072] The first tobacco sheet 21a and the second tobacco sheet 21b may have the same shape (thickness, length, or width) or the same components, or may have different shapes (thickness, length, or width) or different components. Specifically, for example, the first tobacco sheet 21a and the second tobacco sheet 21b may differ from each other in at least one of flavor, thickness, aerosol source content, and surface shape. When the flavors are different, different flavors can be generated from the first tobacco sheet 21a and the second tobacco sheet 21b. Therefore, by adjusting the delivery amount of each flavor, the desired flavor can be provided to the user. For example, the first tobacco sheet 21a and the second tobacco sheet 21b can be tobacco sheets containing different tobacco types or blending ratios, such as burley, yellow, oriental, or native varieties, to achieve different flavors. When the thicknesses are different, a relatively thin tobacco sheet will increase temperature more quickly, allowing for more efficient initial flavor or aerosol delivery. In contrast, with a relatively thick tobacco sheet, the temperature rise is gradual, and flavor or aerosol generation can be sustained until the latter half of smoking. When the aerosol source contents are different, a tobacco sheet with a relatively low aerosol source content will have a rapid temperature rise, and initial flavor or aerosol delivery can be efficiently achieved. In contrast, a tobacco sheet with a relatively high aerosol source content will have a gradual temperature rise, and flavor or aerosol generation can be sustained until the latter half of smoking. Furthermore, when the surface shapes of the tobacco sheets are different, a tobacco sheet with a relatively large surface area will have an efficient initial flavor or aerosol delivery. In contrast, a tobacco sheet with a relatively small surface area will have a gradual temperature rise, and flavor or aerosol generation can be sustained until the latter half of smoking.

[0073] 5, as described above, the first sheet 42 and the second sheet 44 have the same corrugated cross-sectional shape. However, this is not limiting, and the height of the corrugated portions of the first sheet 42 and the second sheet 44 may be different. In this case, the size of the gap S1 between the susceptor-containing sheet 20 and the first sheet 42 and the size of the gap S2 between the susceptor-containing sheet 20 and the second sheet 44 can be made different. Therefore, for example, as shown in FIG. 6A, when the susceptor-containing sheet 20 is formed by stacking a first tobacco sheet 21a and a second tobacco sheet 21b, the first flavor from the first tobacco sheet 21a passes through the gap S1, and the second flavor from the second tobacco sheet 21b passes through the gap S2, thereby adjusting the delivery amount of each flavor and providing the user with the desired flavor.

[0074] The sheet-like susceptor material 25 may have an area smaller than that of the tobacco sheet 21. In this case, it is possible to save the susceptor material 25. The area here refers to the area of ​​the tobacco sheet 21 or the susceptor material 25 extending in the longitudinal direction d1 and the width direction d2 shown in FIG.

[0075] 6B , in another embodiment, the susceptor-containing sheet 20 may include a tobacco sheet 21 and a granular susceptor material 26. In this case, the tobacco sheet 21 can be heated by induction heating the granular susceptor material 26. In the illustrated example, the granular susceptor material 26 is contained inside the tobacco sheet 21, but is not limited to this and may be arranged so as to adhere to the surface of the tobacco sheet 21. The particle diameter of the granular susceptor material 26 may be, for example, 0.1 mm or more and 3 mm or less.

[0076] The thickness of the tobacco sheet 21 shown in Figures 6A and 6B is preferably 0.25 mm or more and 4.0 mm or less. If the thickness of the tobacco sheet 21 is less than 0.25 mm, the amount of flavor or aerosol generated per unit area of ​​the sheet may be reduced. If the thickness of the tobacco sheet 21 is more than 4.0 mm, the size of the flavor-generating article 10 may be too large. In this case, it takes a long time to heat the tobacco sheet 21, which may result in a long time until the initial puff or an insufficient amount of delivery in the initial puff. Therefore, if the thickness of the tobacco sheet 21 is within the above numerical range, the flavor or aerosol can be sufficiently generated and the size of the flavor-generating article 10 can be reduced. Note that, when the tobacco sheet 21 includes multiple tobacco sheets as shown in Figure 6A, the thickness here refers to the total thickness of the multiple tobacco sheets.

[0077] The tobacco sheet 21 shown in Figures 6A and 6B may be a paper-formed tobacco leaf sheet, a cast tobacco leaf sheet, a rolled tobacco leaf sheet, or the like. The tobacco sheet 21 may further include an aerosol source. The type of aerosol source is not particularly limited, and extracts from various natural products and / or their constituent components may be selected depending on the application. The aerosol source is preferably a polyhydric alcohol, such as glycerin, propylene glycol, triacetin, 1,3-butanediol, or a mixture thereof. The tobacco sheet 21 may also include the flavorings described above that may be added to the first sheet 42 and the second sheet 44.

[0078] FIG. 7A is a cross-sectional view showing the configuration of a susceptor-containing sheet 20 of a flavor-generating article 10 according to another embodiment. FIG. 7B is a cross-sectional view showing the configuration of a susceptor-containing sheet 20 of a flavor-generating article 10 according to yet another embodiment. The susceptor-containing sheet 20 shown in FIGS. 7A and 7B differs from the susceptor-containing sheet 20 shown in FIGS. 6A and 6B in that it does not contain tobacco. The susceptor-containing sheet 20 shown in FIG. 7A consists only of a sheet-shaped susceptor material 25. The susceptor-containing sheet 20 shown in FIG. 7B also includes a sheet-shaped susceptor material 25 and a non-tobacco sheet 27 laminated on the susceptor material 25. Since the susceptor-containing sheet 20 shown in FIGS. 7A and 7B does not contain tobacco, in this case, tobacco is contained in at least one of the first sheet 42 and the second sheet 44 shown in FIGS. 3 to 5. As a result, the susceptor-containing sheet 20 is induction-heated, and the tobacco contained in at least one of the first sheet 42 and the second sheet 44 is heated, and flavor or aerosol can be generated.

[0079] In the susceptor-containing sheet 20 shown in Figure 7B, the non-tobacco sheet 27 may include paper or molded pulp. This allows the flavor-generating article 10 to be formed to be lightweight, inexpensive, and sturdy. The non-tobacco sheet 27 may be, for example, a nonwoven fabric. The non-tobacco sheet 27 may also hold an aerosol source. In this case, the amount of aerosol delivered to the user can be increased.

[0080] Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications are possible within the scope of the claims and the technical idea described in the specification and drawings. Note that any shape or material not directly described in the specification or drawings is within the scope of the technical idea of ​​the present invention as long as it achieves the functions and effects of the present invention.

[0081] 10: Flavor-generating product 20: Sheet member 21: Tobacco sheet 21a: First tobacco sheet 21b: Second tobacco sheet 25, 26: Susceptor material 27: Non-tobacco sheet 42: First sheet 42a: First surface 42b: Second surface 44: Second sheet 44a: First surface 44b: Second surface 51: First liner sheet S3: Gap S4: Gap d1: Longitudinal direction d2: Width direction h1: Height

Claims

1. a flat susceptor-containing sheet including a susceptor material; a corrugated first sheet and a corrugated second sheet disposed on either side of the susceptor-containing sheet; At least one of the susceptor-containing sheet, the first sheet, and the second sheet comprises tobacco.

2. The flavor generating article according to claim 1, The tobacco comprises an aerosol source.

3. The flavor generating article according to claim 1, The first sheet has a first surface facing the susceptor-containing sheet and a second surface opposite the first surface, and a liner sheet is provided on the second surface.

4. The flavor generating article according to claim 3, The flavor generating article, wherein said liner sheet is paper.

5. The flavor generating article according to claim 3, A flavor-generating article, wherein a part or all of the gap between the first sheet and the liner sheet is closed.

6. The flavor generating article according to claim 1, At least one of the first sheet and the second sheet comprises paper or molded pulp.

7. The flavor generating article according to claim 1, A flavor-generating article, wherein the height of the wave portion of at least one of the first sheet and the second sheet is 0.2 mm or more and 2.0 mm or less.

8. The flavor generating article according to claim 1, The flavor generating article, wherein the height of the wave portions of the first sheet is different from the height of the wave portions of the second sheet.

9. The flavor generating article according to claim 1, A flavor-generating article, wherein the width of the wave portion of at least one of the first sheet and the second sheet is 0.2 mm or more and 2.0 mm or less.

10. The flavor generating article according to claim 1, At least one of the first sheet and the second sheet contains a flavoring.

11. The flavor generating article according to claim 1, The flavor generating article, wherein the susceptor-containing sheet extends only partially in the longitudinal or transverse direction of the flavor generating article.

12. The flavor generating article according to claim 1, The susceptor-containing sheet is a flavor-generating article comprising a sheet of the susceptor material and a tobacco sheet laminated on the sheet of the susceptor material.

13. 13. The flavor generating article according to claim 12, The flavor generating article, wherein the sheet of susceptor material has an area smaller than that of the tobacco sheet.

14. The flavor generating article according to claim 12, wherein the tobacco sheet includes a first tobacco sheet and a second tobacco sheet; A flavor generating article, wherein the sheet-like susceptor material is sandwiched between the first tobacco sheet and the second tobacco sheet.

15. 15. The flavor generating article according to claim 14, The first tobacco sheet and the second tobacco sheet differ from each other in at least one of flavor, thickness, aerosol source content, and surface shape.

16. The flavor generating article according to claim 1, The flavor generating article, wherein the susceptor-containing sheet includes a tobacco sheet and the susceptor material in a granular form.

17. 13. The flavor generating article according to claim 12, The flavor generating article, wherein the tobacco sheet has a thickness of 0.25 mm or more and 4.0 mm or less.

18. The flavor generating article according to claim 1, The susceptor-containing sheet is a flavor generating article, which comprises only the susceptor material, or comprises a sheet of the susceptor material and a non-tobacco sheet laminated on the sheet of the susceptor material.

19. The flavor generating article according to claim 1, At least one of the first sheet and the second sheet comprises the tobacco.

20. The flavor generating article according to any one of claims 1 to 19, At least one of the first sheet and the second sheet is a non-tobacco sheet.